Verification of state and entanglement with incomplete tomography

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F12%3A33141107" target="_blank" >RIV/61989592:15310/12:33141107 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1367-2630/14/10/105020" target="_blank" >http://dx.doi.org/10.1088/1367-2630/14/10/105020</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1367-2630/14/10/105020" target="_blank" >10.1088/1367-2630/14/10/105020</a>

Result language
angličtina
Original language name
Verification of state and entanglement with incomplete tomography
Original language description
There exists, in general, a convex set of quantum state estimators that maximize the likelihood for informationally incomplete data. We propose an estimation scheme, catered to measurement data of this kind, to search for the exact maximum-likelihood-maximum-entropy estimator using semidefinite programming and a standard multi-dimensional function optimization routine. This scheme can be used to infer the expectation values of a set of entanglement witnesses that can be used to verify the entanglement of the unknown quantum state for composite systems. Next, we establish an alternative numerical scheme that is more computationally robust for the sole purpose of maximizing the likelihood and entropy
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)